What's more, after PC Maneet Bindra's (Maya Sondhi) discovery that Nick's car was spotted near Tim Ifield's (Jason Watkins) flat on the night of his murder, Nick confessed that he was spying on his wife Roz (Thandie Newton).

Ingleby also revealed that he knew from the start that writer Jed Mercurio has more in store for his character and teased what's next for Nick.

"He is completely unsettled," he explained. "He doesn't feel things are back to normal now that he has been released by AC-12 because he doesn't know what is going on with his family and he is questioning Roz's motives and he is deeply suspicious. Jealousy drives him."